Geological Society of America

T230 Five Decades of Impactful Ideas in Hydrogeology: Recognizing the Contributions of Frank Schwartz

Wednesday, 7 November 2018
8:00 AM - 12:00 PM
Room 132

TREATING DISSOLVED IRON IN ACID MINE DRAINAGE USING SLOW-RELEASE HYDROGEN PEROXIDE

Paper number: T230-14
Program: Technical Sessions
Time: 11:15 AM – 11:30 AM

Authors

Sam Miller
Ohio University, Athens, OH
Eung Seok Lee Presenting Author
Ohio University, Athens, OH
Yongje Kim
Korea Institute of Geoscience and Mineral Resources (KIGAM), Daejeon
Young-Wook Cheong
Korea Institute of Geoscience and Mineral Resources, Taejon
Chul-Min Chon
Korea Institute of Geoscience and Mineral Resources, Daejeon, N/A
Franklin W. Schwartz
The Ohio State University, Columbus, OH

Abstract

Metal concentrations from acid mine drainage (AMD) pose a significant threat to aquatic systems worldwide. This study tested the efficacy of using slow-release hydrogen peroxide (SR-HP) to remove dissolved iron from AMD. The SR-HP forms released H₂O₂ in flowing water at stable rates ranging from 0.02 mg min^-1 to 1.5 mg min^-1 depending on salt/binding agent mixing ratios. Proof-of-concept iron removal tests indicated that SR-HP forms can rapidly remove dissolved iron from AMD within 1 minute. Ideal dissolved iron/[H₂O₂] ratios for >80% iron removal clustered around 2, with decreasing removal efficiencies as the ratio increases. A small-scale field test demonstrated that dissolved iron concentrations were reduced by 80% within the first hour of treatment. These results suggest feasibility of using SR-HP to treat dissolved iron and other oxidizable metals in AMD water.

Geological Society of America Abstracts with Programs. Vol. 50, No. 6

doi: 10.1130/abs/2018AM-323913

© Copyright 2018 The Geological Society of America (GSA), all rights reserved. Permission is hereby granted to the author(s) of this abstract to reproduce and distribute it freely, for noncommercial purposes. Permission is hereby granted to any individual scientist to download a single copy of this electronic file and reproduce up to 20 paper copies for noncommercial purposes advancing science and education, including classroom use, providing all reproductions include the complete content shown here, including the author information. All other forms of reproduction and/or transmittal are prohibited without written permission from GSA Copyright Permissions.